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Emily Blunt is opening up about why her husband of six years, John Krasinski, is the "perfect man."

"He is my perfect man, you know, he is funny and warm and bright and confident and a sort of emboldening person to be around," the actress gushed to ET while promoting her new film, "The Girl on the Train."

"I think it depends on your idea of perfection," the mom of two added, when asked if she believes there's such a thing as the perfect couple. "It shouldn't be an ethereal thing that you can't reach. I think that everyone's version of perfect is different."

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Adding to Krasinski's perfection, Blunt praised his parenting skills to their two daughters, 2-year-old Hazel and 3-month-old Violet.

The doting dad is "so much more adventurous," than Blunt, she admitted.

"[He will] throw Hazel on the back of a bike and take off somewhere and go on some crazy adventure. He is so hands-on and so committed."

With the 33-year-old actress currently promoting "The Girl on the Train," the couple are juggling work commitments with family life, with Blunt saying she aims to not be away for more than two days.

Luckily, when the gorgeous actress is traveling, her eldest daughter steps into big sis mode!

"She loves [being a big sister]" said Blunt. "She is so sweet with her."

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When the family do get quality time at home, Blunt enjoys cooking and is looking forward to her girls being old enough to enjoy her "dream" weekend meal tradition.

"Right now I have a 2-year-old, who is a little bit of a fussy eater, so it's not like I can cook the same thing for her that we would eat. But my plan is to do [what we did] growing up, which was that every Sunday we would do a Sunday roast -- cook it all day, then eat it around 4pm or 5pm. It was such a tradition that we all looked forward to."